From: Pavel Emelyanov <xemul@parallels.com>
To: Andrea Arcangeli <aarcange@redhat.com>
Cc: Linux MM <linux-mm@kvack.org>
Subject: [PATCH] UserfaultFD: Fix stack corruption when zeroing uffd_msg
Date: Fri, 8 May 2015 17:07:27 +0300 [thread overview]
Message-ID: <554CC31F.9050509@parallels.com> (raw)
In-Reply-To: <554CBC99.2050808@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
---
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index 026ef99..c89e96f 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -134,7 +134,7 @@ static inline void msg_init(struct uffd_msg *msg)
* Must use memset to zero out the paddings or kernel data is
* leaked to userland.
*/
- memset(&msg, 0, sizeof(struct uffd_msg));
+ memset(msg, 0, sizeof(struct uffd_msg));
}
static inline struct uffd_msg userfault_msg(unsigned long address,
--
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next prev parent reply other threads:[~2015-05-08 14:14 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-18 19:34 [PATCH 0/3] UserfaultFD: Extension for non cooperative uffd usage Pavel Emelyanov
2015-03-18 19:34 ` Pavel Emelyanov
2015-03-18 19:34 ` Pavel Emelyanov
[not found] ` <5509D342.7000403-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2015-03-18 19:34 ` [PATCH 1/3] uffd: Tossing bits around Pavel Emelyanov
2015-03-18 19:34 ` Pavel Emelyanov
2015-03-18 19:34 ` Pavel Emelyanov
2015-03-18 19:35 ` [PATCH 2/3] uffd: Introduce the v2 API Pavel Emelyanov
2015-03-18 19:35 ` Pavel Emelyanov
2015-03-18 19:35 ` Pavel Emelyanov
[not found] ` <5509D375.7000809-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2015-04-21 12:18 ` Andrea Arcangeli
2015-04-21 12:18 ` Andrea Arcangeli
2015-04-21 12:18 ` Andrea Arcangeli
2015-04-23 6:29 ` Pavel Emelyanov
2015-04-23 6:29 ` Pavel Emelyanov
[not found] ` <55389133.8070701-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2015-04-27 21:12 ` Andrea Arcangeli
2015-04-27 21:12 ` Andrea Arcangeli
2015-04-27 21:12 ` Andrea Arcangeli
2015-04-30 9:50 ` Pavel Emelyanov
2015-04-30 9:50 ` Pavel Emelyanov
2015-03-18 19:35 ` [PATCH 3/3] uffd: Introduce fork() notification Pavel Emelyanov
2015-03-18 19:35 ` Pavel Emelyanov
2015-03-18 19:35 ` Pavel Emelyanov
2015-04-21 12:02 ` [PATCH 0/3] UserfaultFD: Extension for non cooperative uffd usage Andrea Arcangeli
2015-04-21 12:02 ` Andrea Arcangeli
2015-04-21 12:02 ` Andrea Arcangeli
[not found] ` <20150421120222.GC4481-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-04-23 6:34 ` Pavel Emelyanov
2015-04-23 6:34 ` Pavel Emelyanov
2015-04-23 6:34 ` Pavel Emelyanov
[not found] ` <20150427211650.GC24035@redhat.com>
2015-04-30 16:38 ` [PATCH] UserfaultFD: Rename uffd_api.bits into .features Pavel Emelyanov
2015-05-07 13:42 ` Andrea Arcangeli
2015-05-07 14:28 ` Pavel Emelyanov
2015-05-07 14:33 ` Andrea Arcangeli
2015-05-07 14:42 ` Pavel Emelyanov
2015-05-07 15:11 ` Andrea Arcangeli
2015-05-07 15:20 ` Pavel Emelyanov
2015-05-07 17:08 ` Andrea Arcangeli
2015-05-07 18:35 ` Pavel Emelyanov
2015-05-08 13:39 ` Pavel Emelyanov
2015-05-08 14:07 ` Pavel Emelyanov [this message]
2015-05-08 17:54 ` [PATCH] UserfaultFD: Fix stack corruption when zeroing uffd_msg Andrea Arcangeli
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